help               :: list all available commands
help dir           :: show help about the 'dir' command
cls                :: clear the screen
exit               :: close the Command Prompt window

dir                :: list files and folders in current directory
cd C:\path\to\folder :: change directory
cd ..              :: move one level up
mkdir logs         :: create a new folder named 'logs'
rmdir emptyFolder  :: remove an empty folder
rmdir /S /Q folderWithStuff :: remove folder and its contents (quiet mode)
copy file.txt D:\backup\ :: copy file to backup folder
xcopy src D:\dest /E /I /H :: copy folder with subfolders and hidden files
move app.log D:\logs\ :: move file to another folder
del /Q *.tmp       :: delete all .tmp files (quiet mode)
ren report.txt report-2025.txt :: rename a file

type README.txt          :: display contents of a text file
more README.txt          :: show text one page at a time
find "ERROR" app.log     :: search for "ERROR" in file
find /I "success" build.log :: search ignoring case
fc old.cfg new.cfg       :: compare two files

systeminfo               :: display system information
hostname                 :: show computer name
ver                      :: show Windows version
echo %USERNAME%          :: show current user
echo %COMPUTERNAME%      :: show computer name
wmic cpu get name        :: show CPU model
wmic logicaldisk get name,description,freespace,size :: list disks with details

tasklist                 :: list running processes
tasklist | more          :: list processes one screen at a time
tasklist /FI "IMAGENAME eq node.exe" :: filter to only node.exe processes
taskkill /IM notepad.exe /F :: force kill notepad.exe

ipconfig                 :: show basic network info
ipconfig /all            :: show detailed IP configuration
ping 8.8.8.8             :: test connection to Google DNS
tracert example.com      :: trace route to a host
netstat -an | more       :: show active connections and ports
nslookup example.com     :: check DNS records for a domain
netsh wlan show profiles :: list saved Wi-Fi profiles
netsh wlan show profile name="YourSSID" key=clear :: show Wi-Fi password

whoami                   :: show current user
whoami /groups           :: show user group memberships
net user                 :: list all local users
net user NewUser StrongP@ss! /add :: create a new user
net localgroup administrators NewUser /add :: give user admin rights
runas /user:DOMAIN\AdminUser cmd :: run program as another user

chkdsk C:                :: check disk for errors
sfc /scannow             :: scan and repair system files
shutdown /s /f /t 0      :: shutdown immediately
shutdown /r /t 0         :: restart immediately
diskpart                 :: open disk partition manager
wmic logicaldisk get caption,volumename,filesystem :: list drives and file systems

dir /B | find /I ".log"  :: list only files and filter those with ".log"
(ipconfig & echo. & systeminfo) > diagnostics.txt :: run multiple commands and save output to file
ping 1.1.1.1 >nul && echo Online || echo Offline :: test connection and print Online/Offline

for /R %f in (*.tmp) do @del /Q "%f" :: delete all .tmp files in folder and subfolders
for /D %d in (*) do @echo %d         :: list all subdirectories
forfiles /S /M *.log /D -7 /C "cmd /c del /q @file" :: delete .log files older than 7 days
setx PATH "%PATH%;C:\tools\bin"      :: permanently add folder to PATH

@echo off                            :: don’t echo each command
setlocal enabledelayedexpansion      :: enable delayed variable expansion
set LOG=build.log                    :: define variable LOG

echo Building... > "%LOG%"           :: log message
if errorlevel 1 goto :fail           :: if error, jump to fail section

echo Done.                           :: success message
exit /b 0                            :: exit with success code

:fail
echo Build failed! >> "%LOG%"        :: log failure
exit /b 1                            :: exit with error code